Page 14 of 15
506325-01
Issue 1734
SEQ
WHITE
RED
RED
BLACK
BLACK
SEQ
7 MHP ONLY
BLUE
BLACK
BLACK
LIMIT
HTR
HTR
LIMIT
C
C
5
4
C
C
3
4
1
2
208 V
240
V
CAPACITOR
BLOWER
208/230-1-60
POWER SUPPLY WITH MIN.
75 COPPER WIRE
THERMOSTAT
T2
T1
L2
L1
GREE
N
RE
D
YELLOW
BLUE
RED
BLACK
RED
RED
YELLOW
RED
BLACK
RED
VIOLET
BROWN
BROWN
NOTE:
IF ANY OF THE ORIGINAL
WIRES ARE REPLACED THE
SAME SIZE AND TYPE WIRE
MUST BE USED.
G
Y
W
R
CIRCUITS ENERGIZED
OPERATING MODE CIRCUIT
ELECTRIC HEAT
FAN R-G
LINE VOLTAGE-FACTORY
LINE VOLTAGE-FIELD
LOW VOLTAGE-FACTORY
LOW VOLTAGE-FIELD
G
Y
W
R
G
R
C
DF2
NC
NO
R
C
S
FAN
COM
HERM
TRANSFORMER
CONTACTOR
BLOWER CONTROL
BLOWER
MOTOR
CAPACITOR-RUN
CONDENSER FAN
COMP
CONNECTOR
BLOCK
L2
L1
BLUE
GREY
COOLING
R-G-Y-O
BLACK
BLACK
X-FRm
R
X-FRm
C
GRAY
BROWN
C
H
MH
L
FUSE
BLUE
BLUE
COM
RVG
RV
O
Y
W
R
DFS2
DFS1
C
C
DF1
LIGHT BLUE
REVERSING
VALVE
BLACK
BLACK
O
O
ORANGE
WHIT
E
RE
D
BLACK
BLACK
DEFROST CONTROL
BLACK
BLACK
PINK
HEAT PUMP
R-W
R-G-Y
COM
BLAC
K
EL. HEAT MOTOR SPEED TAP SEE CHART
VIOLET
BLACK
BLUE
RED
SEE
CHART
FOR WIRING
CNT
PS2
PS1
DEFROST
THERMOSTAT
ML
ORANGE
HEATER ANTICIPATOR SETTING:
3MHP4 - 0.2
5MHP4- 0.4
7MHP4 - 0.4
C
C
BLUE
REPLACEMENT
FUSE SPEC:
ATC-3 BLADE TYPE
32 VOLT 3 AMP
COOLING SPEED TAP
SEE CHART
3
1
RED
5
6
RED
EL. HEAT
MED/LOW
MED/LOW
MED/LOW
LOW
LOW
MED/HIGH
MED/LOW
MED/LOW
MED/LOW
MED/LOW
COOLING
LOW
LOW
LOW
MED/LOW
MED/LOW
MED/LOW
MED/HIGH
MED/HIGH
MED/HIGH
HIGH
MODELS
3MHP4-9-121P-1
5MHP4-9-121P-1
7MHP4-9-121P-1
3MHP4(9,10)*181P-1
5MHP4(9,10)*181P-1
7MHP4(9,10)*181P-1
5MHP4(9,10)*241P-1
7MHP4(9,10)*241P-1
5MHP4(9,10)*301P-1
5MHP4-9-361P-1
BLOWER MOTOR
SPEEDS
Figure 12. Connection Diagram
#537245-01
